AMPHirODA FROM BAY OF BISCAY, 213 



For figures of the first form see Nebeski (23), and for the second 

 Sars (30), pi. 212; for the females Spence Bate's variegatus (3), p. 439, 

 belongs to the first, p('la;/ici(s (3), p. 447, to the second form. 



Through Dr. Caiman's kindness I was able last year to examme in 

 the British Museum the type specimens of Montagu's /^/m^/^s, Leach's 

 l^idchcUa, and Spence Bate's raricgrftvs. 



The type specimen of the species was taken liy IMontagu more than 

 a hundred years ago at Torcross on the Devonshire coast. It is 

 marked QO'A a, and is referred to in the old manuscript register under 

 that number as having been taken at Torcross. In the "List of the 

 Specimens of Crustacea in the collection of the British Museum," 

 1847, by Adam White, it is entered (p. 89) as " Cerapiis falcafus a. 

 Devon (Torcross). From the collection of Col. Montagu." The 

 specimen bears a sufficient resemblance to Montagu's drawing (22) t. 5, 

 f. 2, to suggest that it was the actual one from which the drawing was 

 made. It measures 8 mm. from the tip of the rostrum to the tip of 

 the telson, and is of the type referred to above as the second form. 

 The flagellum of the superior antenna has eight or nine joints, the 

 inferior five. The second sideplate is of the form characteristic of the 

 species, the anterior margin only half the length of the posterior 

 margin of the preceding sideplate. The finger of the second gnathopod 

 has a rather prominent process developed on the inner margin ; this 

 process I have found of frequent occurrence in the larger males. The 

 small spines which are found behind the thumb process on the hind 

 margin of the hand are represented in Montagu's figure as another 

 process. They are naturally much more prominent in the dried 

 specimen than in spirit specimens, owing to the shrinkage. 



Tiiere are seven specimens marked " Fodocerus pulchellus, Devon," in 

 the old manuscript register, and numbered 296 a — g, which appear to 

 be Leach's types. These are exactly the same form as Montagu's. 

 Two have lost both gnathopoda and antennae ; of the others, one is 

 a young male with the thumb half developed, and the remaining four 

 are adult males, thumb well developed, process on inner margin of the 

 finger small. The antennae of all were broken, excepting two superior 

 antennae, which had about seven joints each. 



The tube marked Podoccrus varicgcdus in Spence Bate's collection, as 

 Mr. AValker pointed out (44), p. 472, contains more than one species, 

 several of the specimens belonging to J. pusilla. Among the falcata 

 were two young males and two or three full-grown ovigerous females 

 of the type referred to above as tiie " first form," and figured by Bate 

 as P. varicgatns (3), p. 4o9.] 



